public void DecryptFile(string sourceName, string targetName)
{
var sourceInfo = new FileInfo(sourceName);
if (!sourceInfo.Exists)
{
throw new FileNotFoundException("Source File was not found or has been deleted.", sourceName);
}
var targetInfo = new FileInfo(targetName);
if (targetInfo.Exists)
{
var message = string.Format("Target File \"{0}\" already exists.", targetName);
throw new InvalidOperationException(message);
}
SBUtils.Unit.SetLicenseKey(SBUtils.Unit.BytesOfString(License));
var privateRing = new SBPGPKeys.TElPGPKeyring();
lock (typeof(SBPGPKeys.TElPGPKeyring))
{
privateRing.Load(encryptionKey, signatureKey, true);
}
var reader = new TElPGPReader
{
DecryptingKeys = privateRing,
VerifyingKeys = privateRing,
KeyPassphrase = passphrase,
};
try
{
using (var sourceStream = sourceInfo.OpenRead())
using (var targetStream = targetInfo.Create())
using (reader)
{
reader.OutputStream = targetStream;
reader.DecryptAndVerify(sourceStream, 0);
}
}
catch (Exception)
{
targetInfo.Refresh();
if (targetInfo.Exists)
{
targetInfo.Delete();
}
throw;
}
}
public void EncryptFile(string sourceName, string targetName)
{
var sourceInfo = new FileInfo(sourceName);
if (!sourceInfo.Exists)
{
throw new FileNotFoundException("Source File was not found or has been deleted.", sourceName);
}
var targetInfo = new FileInfo(targetName);
if (targetInfo.Exists)
{
var message = string.Format("Target File \"{0}\" already exists.", targetName);
throw new InvalidOperationException(message);
}
SBUtils.Unit.SetLicenseKey(SBUtils.Unit.BytesOfString(License));
var publicKey = new SBPGPKeys.TElPGPPublicKey();
publicKey.LoadFromFile(encryptionKey);
var privateKey = new SBPGPKeys.TElPGPSecretKey();
privateKey.LoadFromFile(signatureKey);
privateKey.Passphrase = passphrase;
var publicRing = new SBPGPKeys.TElPGPKeyring();
publicRing.AddPublicKey(publicKey);
var privateRing = new SBPGPKeys.TElPGPKeyring();
privateRing.AddSecretKey(privateKey);
var writer = new TElPGPWriter
{
Armor = true,
Compress = false,
CompressionLevel = 9,
Filename = Path.GetFileName(sourceName),
EncryptionType = TSBPGPEncryptionType.etPublicKey,
Protection = TSBPGPProtectionType.ptNormal,
UseNewFeatures = false,
};
writer.ArmorHeaders.Add("Version: PGP 6.5.2");
writer.Passphrases.Add(passphrase);
writer.EncryptingKeys = publicRing;
writer.SigningKeys = privateRing;
try
{
using (var sourceStream = sourceInfo.OpenRead())
using (var targetStream = targetInfo.Create())
using (writer)
{
writer.EncryptAndSign(sourceStream, targetStream, 0);
}
}
catch (Exception)
{
targetInfo.Refresh();
if (targetInfo.Exists)
{
targetInfo.Delete();
}
throw;
}
}